(AP) — A 16-year-old Oklahoma boy will stand trial as an adult in the stabbing deaths of his parents and three siblings, a judge ruled Monday, rejecting a request by defense attorneys to certify him as a juvenile delinquent or youthful offender. According to a search warrants affidavit, one of the brothers told police that plans for the killing were on a thumb drive inside the family's Broken Arrow home. Two family members survived the attack and one of them, a teenage girl, plans to testify for the prosecution at the brothers' Jan.